import React,{Component} from "react";
let name='lbw';
let dataList=[123,234,345,567,789]

export default class App3 extends Component{
    render() {
        return(
            <div>
                <div>
                    {name}
                </div>
                <div>
                    <ul>
                        {
                            dataList.map((v,k)=>{
                                return(
                                    <li>{k}:{v}</li>
                                )
                            })
                        }
                    </ul>
                </div>

            </div>
        )
    }
}